Well, first of all, you may be thinking, "What do minions have anything to do with letter reversal?" Let me tell you!
I love connecting things they like with academics. While teaching little ones, I've seen a lot of letter reversing, but especially with b and d. Well, I taught them a strategy to help them keep these straight and IT'S BEEN WORKING!!!!!! The Minions helped me with this! Because they are so popular, kids know a lot of their "words." One of their well-known words is "bedo." This is something they say when there is a fire, as seen below...
I taught my kiddos that if they ever get confused with the b and the d, to simply make two thumbs up and put their fists together, like below, and they'll see a b and a d! To help them remember which is which, they say "bedo" (be for b and do for d). They know that be begins with b and do begins with d. So they are listening for the sounds.
During writing, I have seen them place their fists together and say "bedo" to themselves. It has been amazing to see them using this strategy! Try it out!!